12-Layer Gold Finger PCB Manufacturer | 1.6mm FR-4 TG170 ENIG & Hard Gold Plating | UGPCB

High-Performance 12-Layer ENIG + PCB cu deget de aur Product Overview

The 12-Layer Gold Finger PCB is a hallmark product in the high-end printed circuit board industrie, engineered specifically for electronic equipment demanding extreme reliability, stable electrical connections, and frequent plugging/unplugging cycles. UGPCB employs advanced manufacturing processes and premium materials (FR-4 TG170), combining 2μ” Electroless Nickel Immersion Gold (De acord) surface finish with 30μ” Hard Gold Finger Plating tehnologie. We deliver a comprehensive high-reliability PCB solution for applications ranging from industrial controls to advanced communication systems.

Product Definition

A Gold Finger PCB refers to a circuit board featuring a series of exposed, rectangular contact pads plated with thick gold (“fingers”) along one edge. These boards are designed for direct insertion into a matching connector slot, establishing a stable, pluggable connection for electrical signals and power between devices. This product is a 12-layer multilayer PCB with a standard thickness of 1.60mm, offering an optimal balance between complex circuit integration and mechanical robustness.

Critical Design Considerations

1. Gold Finger Area Design:

   • Chamfer (Bevel) Edge (Typically 20-45°): Facilitates smooth insertion into the connector—a critical aspect of Gold Finger Design PCB.

   • Lead-in (Trace Fanout): Connections from the gold fingers to internal traces must have smooth curves, avoiding right angles to prevent stress concentration and plating cracks.

   • Solder Mask Clearance (Solder Mask Define): The gold finger area requires precise solder mask opening to ensure a clean, exposed plating surface.

2. Controlul impedanței & Integritatea semnalului: As a 12-layer precision PCB, strict impedance control (De ex., 50Ω single-ended, 100Ω differential) for high-speed signal layers is essential. Stack-up design must be optimized via simulation to minimize crosstalk.

3. Thermal & Reliability Management: High-Tg material, coupled with a well-designed via structure, ensures the high-layer-count PCB operates stably in elevated temperature environments. Plated through-holes (PTHs) should be avoided at the root of gold fingers to prevent fluid entrapment and structural weakness.

How It Works & Structura

This PCB facilitates complex circuit interconnections through its internal 12 conductive layers. The core functionality resides in the Hard Gold Plated Fingers. The durable 30-microinch gold plating provides excellent conductivity, oxidation resistance, and wear resistance. When the board is inserted into a backplane or card-edge connector, the gold fingers make tight, low-resistance electrical contact with the connector’s spring contacts, transmitting signals and power. The board core uses FR-4 TG170, providing solid mechanical support and electrical insulation.

Core Materials & Specifications

• Material de bază: FR-4 TG170. A high-performance epoxy glass laminate.

  • Temperatură ridicată de tranziție din sticlă (Tg ≥ 170°C): Significantly enhances the PCB’s mechanical stability and heat resistance under high-temperature operating conditions, preventing delamination and Z-axis expansion.

  • Superior Electrical Properties: Low dielectric constant (DK) and dissipation factor (Df), suitable for mid-to-high frequency applications.

  • High Mechanical Strength: Ensures the 1.6mm thick PCB board resists bending and warping in mating/unmating and high-vibration environments.

• Finisaje de suprafață:

  • Board Surface: Electroless Nickel Immersion Gold (De acord, 2μ”): Provides a flat, coplanar surface for reliable soldering of fine-pitch components and offers excellent oxidation resistance.

  • Gold Fingers: Selective Electroplated Hard Gold (30μ”): High hardness, superior abrasion resistance, and extended mating cycle life, capable of withstanding 500+ insertion/withdrawal cycles with ease.

Caracteristici cheie & Advantages

1. Unmatched Reliability: FR-4 TG170 high-Tg material şi 12-layer precision lamination ensure long-term stability in harsh operating conditions.

2. Extended Mating Cycle Life: 30μ” thick hard gold fingers far exceed standard plating thickness, offering exceptional wear resistance—the ideal choice for high-durability plug-in PCBs.

3. Integritate excelentă a semnalului: The multilayer design provides uninterrupted reference planes for high-speed signals, and controlled impedance guarantees signal quality.

4. Robust Thermal & Mechanical Performance: The 1.60mm standard thickness combined with high-Tg material delivers superior rigidity, Managementul termic, and dimensional stability.

5. Comprehensive High-End Solution: Din multistrat Fabricarea PCB la specialty surface finishing (De acord + Selective Gold), UGPCB provides full-process control, ensuring consistent, high-quality results.

Manufacturing Process Flow

Panelization → Inner Layer Imaging → Lamination (12-Strat) → Drilling → Desmear & Electroless Copper Deposition → Outer Layer Imaging → Pattern Plating (for Hard Gold Fingers) → Etching → Solder Mask Application → ENIG Surface Finish → Gold Finger Beveling → Electrical Test (Flying Probe / Fixture) → Final Automated Optical Inspection (Aoi) → Packaging.

Aplicații primare & Cazuri de utilizare

This product is the core component of high-end electronic devices requiring direct board-to-board plug connections sau integration into backplane systems.

• Industrial Control Systems: PLC modules, industrial computer motherboards, servo drives, I/O interface cards.

• Telecomunicații & Networking Equipment: Router/switch line cards, optical transceiver modules, baseband processing units.

• Electronică medicală: Data acquisition and processing boards for advanced medical imaging systems (De ex., CT scanners, ultrasound machines).

• Test & Measurement Instruments: Plug-in modules for high-end oscilloscopes, spectrum analyzers, and Automated Test Equipment (ATE).

• Aerospațial & Defense Electronics: Mission-critical avionics systems and radar signal processing modules where reliability is paramount.

Scientific Product Classification

1. By Layer Count: High-Layer-Count / Placă de circuit multistrat (≥8 layers, specifically 12 straturi).

2. By Special Feature/Process: Gold Finger (Gold Edge Connector) PCB, Mixed Surface Finish PCB (De acord + Selective Hard Gold).

3. By Material Property: High-Tg (TG170) PCB, FR-4 Series PCB.

4. By Application Grade: Industrial-Grade PCB, Telecom-Grade PCB, High-Reliability PCB.

Why Choose UGPCB’s 12-Layer Gold Finger PCB?

We understand that a reliable Gold Finger PCB is the foundation of your high-end equipment’s stable operation. Leveraging deep expertise in multistrat Fabricarea PCB-urilor şi specialty surface finish processes, UGPCB guarantees that every board delivered meets military-grade reliability standards with commercial-grade delivery efficiency. We provide not just a product, but a customized PCB solution.

Contact our technical sales team today to discuss your project requirements, receive a detailed quote, and qualify for a free design-for-manufacturability (DFM) recenzie and sample program. Partner with UGPCB for your most demanding 12 layer circuit board aplicații.